Bug 15631

Summary:	sleep command after '&' in a shell script has no effect
Product:	Busybox	Reporter:	Manhong <manhongdai>
Component:	Standard Compliance	Assignee:	unassigned
Status:	RESOLVED DUPLICATE
Severity:	blocker	CC:	busybox-cvs
Priority:	P5
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Linux
Host:		Target:
Build:

Description Manhong 2023-06-17 21:04:58 UTC

In BusyBox v1.36.1 coming with Alpine Linux 3.18.2 for Raspberry Pi, the script below will return immediately. However, on all old versions of BusyBox, such as v1.35.0 on Alpine Linux 3.17.3 on Raspberry Pi, it will return after 60 seconds.

#!/bin/sh
for i in 0 1 2 3 4 5
do
	echo "Loop: $i" &
	sleep 10
done

Comment 1 Manhong 2023-06-17 23:48:27 UTC

A workaround is to add a pair of parenthesis to the command that need to be in the background. 


#!/bin/sh
for i in 0 1 2 3 4 5
do
	( echo "Loop: $i" & )
	sleep 10
done

Comment 2 Tero Saarni 2023-07-09 07:32:12 UTC

This is the same bug as reported in https://bugs.busybox.net/show_bug.cgi?id=15619

Comment 3 Manhong 2023-07-09 11:59:09 UTC


*** This bug has been marked as a duplicate of bug 15619 ***